I think it should be covered but I understand the dealership's point of view. In any case, I still think it should be covered. Technically, if it's bent, it was probably bent by someone plugging the cord into the car in a wierd angle or being a beast to it OR even more likely in my opinion is the plug that was used is defective and it bent the pin on your Bolt. Since the pin, probably didn't 'bend' on it's own. Nor did my 2008 Dodge Truck hit the pole on it's own, the dealership is following the letter of the warranty too close. To them, it's not a manufacturer defect. It's human error or damage from a 3rd party device. Many times here, it's been suggested when plugging the car in, to inspect the cord and car for damage or anything out of place. Keep fighting the fight, take it up with management. This is the land of entitlement and lawyers, you may have to use that angle as some here start there first and ask nicely second.